Toggle mechanism.



F. A. STEVENSON.

oGGLE mEcHAmsM'.

APPLICATION HLED NOV. l2. |915.

1,276,437. f Patented Aug. 20, 1918.

2 SHEETS-SHEET 2.

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Y imrrnn s'rarns PATENT orrron. L

FREDERICK A. STEVENSON, F DETROIT, MICHIGAN, .ASSIGNOR T0 AMERICN CAR AND FOUNDRY COMPANY, 0F ST. LOUIS, MISSOURI, A CORPORATION OF NEWfJERSEY.

Toscana MECHANISM.

T0 all whom it may concern:

Be it known that I, FREDERICK A. STEVEN- soN, residing at Detroit,.-Michigan, and

beingva citizen of theV United States, have invented certain new V'and useful Improvements'in Toggle Mechanism, of whichthe `Jfollowing is a full, clear, and exact description, such as will enable others skilledVin the art to which it appertains to make and to use the same, reference being had tothe accompanying drawings, which-illustrate the preferred form of the'invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various Vmodifications .thereof will occurv to persons skilled in theart.

In said drawings: Y Y y Figure 1 is a longitudinal section through a. punching device illustratingan embodiment-'of'my invention, and `is taken on-line 1 1 of Fig. 4. f Fig. 2 is al'partialfplan. and horizontal section of the vertically slidable impulse member-of the `punching devicetl1e sectional -portion being taken on line 2-2 4of YFig 1. l

*Fig' 3 is a of Fig. l, showing the base plate and the parts associated therewith principally in plan, some parts being broken awayv for added clearness.

Fig.' 4L is a vertical transverse section taken on line L -4 of Fig. 1,and discloses 'partaof the toggle mechanism of a plurality of punching units and means'-:l'for'rendering the l-atterr effective'.

Fig-5 is alfragmentary sectional view taken on the anticlinal planes indicated by line 5-5 of Fig. l, and depicts 'other por-A tions of theV toggle mechanism.

Fig. v6 vis another fragmentary section `taken on line 6-'6 ofFig. 4, further illustrating thel means for rendering the toggle mechanisms of the punching deviceeifective.

Figs. 7 and 8 are detailviews ot the uppermost toggle leg. Y y

Figs; 9'V and 11 are also detail views, each illustrating one off the remaining toggle legs.

Fig. 10 is a: detail Yview of thecommon pivotal member ot -the toggle mechanism,

two patents,

horizontal section taken on line spew-"mation of Letters Patent. Patented 20, 1918.` Application filed Noveinber1r2, 1915. Serial No. 611,063. l

parts beingseparated vto accentuate the individuality ot each and Fig. 12 is la sectional view) taken on'. line 12-12 of Fig. 4, and shows corresponding ends of the arcuate `iianges of the toggle legs slidably retained in one of the annular grooves in the common pivotal member.

This invention-pertains toa togglemechanism thatis susceptible to embodiment in aI considerable variety of machines and in machine ixtu'reswhereinv a movable impulse member is depended upon*` to cause the actution of another.l movable Ymember not di- Irectly attached thereto. An example of such anembodiment is illustrated in my one being for a i i chine, Fatent 1,164,027,- wherein the toggle' mechanism is ments ofthe respective-machines and not as general machine design.

forth. Y

The modes` of rconnecting Athe elements of -the toggle mechanism with themselves and with the parts associated with them are also features of. theinvention.

The arrangement of great power may beexerted to enable the tool to overcome any amount of resistance work may develop, while the. construction `punching -ma- No..1,164,028, andv the other f for a channel punching machine, Serial No.;

4claimed only in con]un ction with other 'ele- -an independent mechanism applicable in the parts is such that of the 'variousl elements insures an appro- Y priate absorption by each of set up stresses eliminating any dangerv ofcollapse in the mechanism.l Y Such an assembly'oi associatedmembers nected mechanism capable of permitting free, .easy and lharmonious action between its several parts, it being further'.` contemplated to include a plurality of such mechanisms in:4 a single device,vand means is proposed as will produce a strongly confor selectively rendering any of the mechanisms effective or ineffective.

@ther advantages becoming manifest hereinafter are, of course, to be understood as all coming within the scope of the present invention.

ln the drawings the invention has been shown as applied to a punching'machine, but this is merely a typical application as will later be pointed out. Referringv to the parts of the illustrated example, 1 indicates suitable base Vin 'or on which arevbe'd p0rtions 2. Arising at one end vof each of said bed portions is an end wall, l3, which, if desired, may connect a plurality of bed portions 2, upstandin-gl side Walls 4 extending inwardly from the end wall 3 in pairs and being appropriately spaced from each other.

beirl o' Said sidewalls 4 are provided along their top edges for a suitable distance with inwardly extending `horizontal flanges 5, those of companion side walls .projecting toward each.` The vertical side walls 4 and the bed 2 of each punching unit are provided with thickened portions, preferably -co-eXtensive with the length of flanges 5, these thickened portions and the undersides ofsaid flanges ig machined to form a guideway. 1n the latteris seated a reciprocatory `head 6, which may be shaped to form `any suitable type slide, and is retained in `place by the flanges 5, which are shown to overhang said head 6. Y

Reciprocatory head 6 has means such as lug 7, for the attachment thereto ofi a toolholder, the latter in the present instancebeing shownas a punch-block 8, provicledwith a lug 9 adapted to be clamped tolug Tof head 6 by bolt 10, or other suitable means. That the punch block 8, or other 'toollholdeig may be undeviatingly positioned in 4its normal line of travel, it is providedwith tongues 11 adapted to lit and beslid into grooves 12 in the reciprocatory head 6, and when so fitted and lugs 7 and 9 are bolted together 'the punch block 8 is reliably heldas maybe seen in Figs. 1 and 3. 1n practice, a'number of punch blocks having lugs 9 of varying length may comprise fa set Jfor each punching device and permit the setting of a punch 13 at! different altitudes. Said punch 13 is secured to a punch stem 1-4'retained in said toolholder or punch block S, which stem is provided with Va head which bears against a backing-,plate :15 secured to reciprocatory vhead 6.

Alined `with punch 13 of each-punching Vunit and having a commonaXis therewith is a die 1 6 mountedin a die-block 17, vthelatter being adapted to lit and be 'sli'd'into agroove in a standardv 18, at the end of bed 2 opposite that from which en'd'wall 3 arises. Die block. 17 'is furnished with'ra lug`19, which by such means asa bolt 20 secures said dieblock to standard 18. In a given set-up the respectively, are proportioned to properly line the punch 13 and die 16,y and die block 1.7 is provided with a passage 21 communicating with a passage 22 in standard y18, whereby slugs punched `from the work lind an exit fromthe punchingdevice. l"

That portion of reciprocatory head 6 to which backing-plate 15 is attached is rugged and `blocklike and, preferably, is of L- shaped cross-section, the upstanding leg of thev L being materially thicker than the-horizontal leg, the reciprocatory head 6 also having outer side walls 23 between which the Leshaped portion is located, as bestseen in Figs. 1, 3 and 5.

The horizontal leg and the bottomsof-the side walls 23 of the :reciprocatory'head are finished to slide on zthe thickened portion of bed '2, while the `outer facesfof said `side walls 23 slide along'the inner faces. ofthe thickened portions of the side walls 4 of base f1. The top edges ,of side wal-ls 2 3 have sliding engagement :with the under vsurfaces of llanges 'ofthe base side walls 4. Thus,

the reciprocatory head is yadapted to slide back and forth in the guideway.

To impart `sliding movement to head .6, a toggle mechanism is provided and Vcomprises, in the .forni shown, triplicate legs and a commonepivotal member connected `with and connecting said toggle legs,`.vvhich legs pivotal connection, all of'saidftogglelegsbe- Y ing rotatively united about said Common pivotal member, vwhich also `forms the cen'- t-ral member of' the toggle m'echanisrn;

Said common pivotal member zcomprises a pintle 28 provided at its outer-end With an annular flange 29 and a disk-like cap 30 removably connected'to the opposite l'end of said pintle 28,"pre'fe'rably by'me'ans of an integral threaded stud 31 projecting from cap 30 and entering a'threaded recessinthe adjacent end of xpintle 28; 1 Both said annular-flange'29and the cap 30 contain an annular groove `r32, the inner'diameter of which corresp'onds'to that of's'aid pintle 2S and -the`outer-diam'ete'r of which is suliicientto envelop'the adjacent ends'o'f arcuate flanges 33 carried'by Ithe innergen'ds s of the togglelegs 24, 2tfa-'r1d26- Arcuate flanges 33 conform to the curvature offpintl'e 28 and extends Ytherealong beyond `the` sides 'of the "toggle "legs-v andyproject jat opposite ends into the annular grooves32 in annular flange 29 andcap 30, being-securelyheldin sov at its outer end a cylindrlcal or other shaped barrel 34 disposed parallel to the arcuate flanges 33, and which is drilled orotherwise apertured for the passage of a bolt or pin.-

The barrel ends are countersunk to receive the reduced ends of removable hardened steel journals 35, whichy are centrally drilled to continue the passages in the barrel 34. Y

Barrel 34 of toggle leg 24-bears against a conforming seat 36 in the endl wall 3 of the punching unit to which the toggle mechanism belongs, and its extensions or journals 35 are seated in bearingscreatedby making cylindrical holes in companion side walls 4 of-base 1. Journalsj35 are retained seated in the ends of barrel34 by a.bolt` and nut 37. The axis of barrel 34 and the journals 35 of toggle leg 24 is therefore fixed and said toggle leg is restricted to a rotary Vmovfement thereabouh Y,

` At or near the junction ofthe inner angle of the L-shaped portion of the reciprocatory head Gis formed a similar seat y38 for the barrel 34 of'toggle leg 25, the journals ,35'

seated in theends of which barrel projecting into bearings formed byv in the side walls 230i? the' reciprocatory head 6. A pin 39 passes through barrel 34 and journals 35 of toggle leg-25, but is unheaded as the sidewalls 4 upstanding from base 14 on either side of head 6 prevent the dislodg-v ment of pin 39 in any of the positions of said head. j Toggle leg 25 manifestly rotates aboutl thefaxis of its barrelV and journals, and said axis. travels back andforth with said head. v j l Impulse member 27 is designed to receive motion from any proper agent, it being a common practice to bolt it to the slide of a7 punching machine when the invention is employed vices. One end of impulse member 27 rides over a guide 40 mounted in andv extending upwardly from base 1, and at the opposite end impulse member 27 is providedvwith a depending pair of spaced lips 41 for each punching unit. Toggle leg 26 of the toggle mechanism under consideration extends upwardly between'loops 41associatedwith said Vtoggle mechanism and an end of its barrel 34 itself forms a bearing seated in `one of the loops 41, such as the inner one. A removable journal 35 extends into the companion or outer loop 41 and is held seated in barrel 34 by a boltV and nut 42.

Between companion loops 41 and l*above barrel k34 of toggle leg 26 is a chamberv 43 in which is a toggleblock44, resting upon thebarrelV 34 of said toggle le 26. l The punch-v ing devices or units may e usedsingly or combined in groups in the same machine,

cylindrical holes in connection with such class of de '43/of the other punching unit,

and when singly used a `single gaglmay be inserted into` chamber 43 into a space that is present below the top wall of said chamber and the vupper surface of,l toggle block 44 contained therein, filling said space.- A downward movement would then actuate said toggle mechanism to operate the tool affected thereby. j VIndividualgags maybe used also when punching units are 'arranged in groups, if desired, but a gagging devlce hasbeen lillus-k trated which has given eminent satisfaction in practice. As shown, it'fcomprises afhorif.4

zontally disposed gag 45l in the, formof a rectangular bar depressed or cut' out cen-lV trally on its upper side. In the cut-out portion of the bar is a hole in lwhich is seated a pin 46 riveted :to shifting bar v47.V The Vlatter extends away' from gag 45 and at its opposite end is secured, as by.bolts,or rivets, to `a gag-handle 48, which extends in opposite directions through and beyond the sides of impulse member 27.

Notches 49 and 50 are formed in thev under side of gag handle 48 outside ofimpulse member 27, and attached to the outer'k sides of saidimpulse member-are springdetents.

l51 and 52 adapted to be engaged by notches' 49 and 50, respectively, when the gag-handle 48 is moved in one direction or the other.

Gag 45 is located between twopunching units, as shown, and is supported by a bracket 53 secured to wallV 54 of impulse Y member 27, as by screws. Said gag has itsV opposite ends directed toward'chambers 43 in impulse member27 and projects slightly into each, but notvfar enoughto extend overv the toggle block 4401i the toggle mechanism of either punching unit, whengag 45 is not in use. i

But, when gag-handle 48V isjmoved to cause, say,rnotch 49 to engagejits spring4 detent 51, shifting bar 47 projectsone end of gag 45 into chamber 43, shown at the right in Fig. 4and at thetop in Figf2, filling the space between the under side of the top wall of impulse `member 27 andthe top of toggle block', 44 in that chamber. Moving gag Y j rection vso that lnotch vengages detent 5 2, the opposite end of gag 45 enterschamber sagging .the latter in likemanner. j j When either punching unitis so gagged andrk impulse member 27 isA moved downwardly vb-yvany agel shown) of ajpunching machine, toggle leg 26 of the affected toggle mechanism is forced downwardlyby toggle block v44, in turn pressing on pintle- 28 of the'common pivotal y.member and moving the latteralso downwardly.' V'loggle legs 24 and 25, which" arenormally both inclined upwardlyA 'toward handle 48 in; the opposite div nt, such' as th'e'slide (not 'y saidA commonpivotal member and connected Vll) position shown in the drawings, or when it isinserted into' one chamber 43 'to one toggle mechanism and not the other, the efieeeeedtee'ele meeheiiiem is not operated- Upe'ii'ie deviivell mevemeet 0f impulee meilbeiY 27; the .eiieee iii thefeheiiibere f0.1' the'eiieeeeed teefele meeheeiem; .beine ueocc pied bythe end ,of lgag e5, permits :the

top Wall of chamber` tcvmove down'` a. distance equal vto the stroke of saidimp'ulse member 'Without contacting with ltoggle bloc'li 44. I-lence, in view of this lostinotion, nomovement is given tothis toggle mechanism. 'Itihas ybeen ,stated that the punching device illustrated is but a typical application of the invention. ThatV it is fullyy intended to apply theoperating mechanism'herein described, either to operate a toolorto transmit motion from one part of a machine 'tovv another part, isto `rbe clearly understood. lso, instead of operating y.a punch, the headb may actuatel Ia drawing and forming die'set, or itmaly be vusedl to Work` embossing dies.

The mechanism may be used for applying pressure in any'ikind of machine requiring it, and groupsof such mechanisms may be arranged to'lapply Vpressure either simultaneously en a. movable member of considerable area""orupon"al group or ltools and in the latter'casef in unison or in any order desired'.

Al. In'ucombination in'v a mechanism of the class described, amovable member, an impulsey member, a toggle mechanism connected positively with said'movable member and continuously retained by said impulse member being at times loosely and inoperatively connected "therewith, and means Yfor positivelyfand operably connecting said toggle mechanism and impulse member at will- In combination in a mechanism of' the class described, a iiXed support and a movable member, a toggle kmechanism vconnecting the same and provided with an operatiiie' member, .en impulee .membef having e lost motion connection with the latter and independently `operable means for converting said lost motion'connection to a positive connection,

'8. In combination in a mechanism of the class described, fixedand movable members, spaced bearings in each, and a toggle mecheiiiern Comprising eem'iiieiily riveted ieee er .linke ,heviee l Outer periieee extending f between said spaced bearings and separate tetes?- 5.1111 combination in a' mechanism ofthe class` described, a' stationary member having* anfendwall and sidewalls, 'a Seatjin the. former and bearings'in thelattensaid seat and bearings being. spaced longitudinally Single eXiS; e'elideMe member', toggle mechanism vc'omprising "commonly vp'ifvted legs one pivotally" connected withH saidv slidable member and another seated in saidseat and journaled in said bearings, andmeans for operating said toggle mecha'nism. V l G.- In combination in a mechanism ofthe class des'cribecbfa stationary member, amovable member, a movable impulse member the' latterl being providedjwith achambei", a Peifefbearine lOOPS a togglemechanism connecting' 'said sta- `dep ending therebeloltv, Y

tion'ary vand"movable members and"being provided vvitliI a leg extending betweenl ysaid bearing loops, journals projecting from said leg into movable insaid'lQpS, Vdevice iii Seid Chamber Ibeeiiee' 011 sari,V lee: end means fadapted to be projected betvveen' a of saidchamber and v"said device to cause saidimpulse member `to definitely position thefjo'urnals in said., loops` and to operate saidtogglemechanism. v

7. In combination in a mechanism of vthe `class described a movable impulse member provided `'with a challber, aspaced pair of bearing loops dependingtherebelovv, a toggle mechanism adapted lto operate another movable member andv being provided vvithl a leg extending. .etvv'een said bearing loops, journals projecting from said leg into and movable in said loops one of said journals being removably held to said leg,.a device in said chamber bearing onv said legand adapted at timeS. tobe .held thereby against movement With said impulse memberv and means adaptedto move said impulse memberVv anddevic'e together at will to definitely position said journals in said loopsA yand to operate said toggle mechanism. I

8. In combination in a mechanism ofthe class described",` a movable impulse member provided with a chamber, a toggle mechanism v4adapted to operate .another vmovable member and provided withy a leg connected in slidable relation With said impulse member, a device in said chamber bearing on said leg, Va gag normally outlof alinement with said device,

` class described, a common' pivotal member having a cylindrical body portion land portions provided with annular grooves, toggle legs or links connected with said common pivotal member to have relatively rotative interlocking relation therewith, one

of said legs or links having at one end an arcuate flange adapted to bear on said cylindrical body portion and extending from .opposite sides of the last mentioned leg and into said annular grooves and provided at its opposite end with a cylindrical barrel portion recessed at one end and forming a journal at the other end; a removable journal fitted to the recessed end and means Copies o! this patent may be obtained for to project said gag between ive cents each, by

Washington, D. 0.

,securing said removable journal to said barrel portion. Y

10. In combination in a mechanism of the class described, a common pivotal memberV havingva cylindrical' body portion and portions provided with annular grooves, toggle legs or links connected with said-common pivotal member tol have interlocking relation therewith and each 'having at one end an arcuate flange adapted Y to bear on said cylindrical body portion and relatively y rotativeY extending from opposite sides of said legs into said annular grooves, cylindrical barrel portions at the opposite ends of said legs y"recessed at their ends, removable journals itted to the recessed 4ends and means se-l curing the removable journals to said recessed ends. f In witness whereof I have hereunto set my hand in the presence of two witnesses. FREDERICK A. STEVENSON.

Witnesses: o

. J. K. BANGS, Jr., Y. v i j STUDER. v

addressing' the Commissioner of vl'atomzl, 

